To save his son, he must leave reality behind. It's been 32 years since a massive dimensional rift opened in the sky, and in that time The Ripped Sky Event has been largely covered up and denied. Spencer Smith has vague memories of what happened during those few hours, though, including the strange behavior exhibited by kids all over the world. Now, his five-year-old son Luke is acting strangely too, and Spencer thinks there's a connection. When Luke's behavior becomes increasingly frightening and violent, Spencer grows desperate to discover the root cause and help him before any permanent damage is done. After exhausting every available option, Spencer uncovers a means to reach higher planes of existence and perception, through a process his former physics teacher calls "riding the spiral". By doing this, he hopes to see what's happening inside Luke's brain with his own eyes. But, as Spencer travels through the coils of reality beyond the human experience, an inhuman presence is stalking him. And he learns that, to help Luke, he may have to ride the spiral so far that he can't come back.